[x86] Clean up a bunch of vector shuffle tests with my script. Notably,

[x86] Clean up a bunch of vector shuffle tests with my script. Notably,
removes windows line endings and other noise. This is in prelude to
making substantive changes to these tests.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221776 91177308-0d34-0410-b5e6-96231b3b80d8